What you are saying is very misleading.
The facts are that consumer LCD and OLED TVs inherently have panel uniformity problems meaning every set has them to one extent or another. It would be too costly for manufacturers with the current technology to provide a perfect panel so we will probably never see this.
For OLEDs there are millions of LEDs that all have to be emitting the same amount of light at the same intensity and color. In addition, as the luminance increases they then have to emit this light in a linear fashion. What Sony appears to have done is improve the uniformity calibration process at the factory to make the panel more uniform and linear. This doesn't mean that you are now going to see a perfect panel. What it means is the panels should be cleaner than before and hopefully clean enough not to see any uniformity issues with content given the price point of this consumer TV.
Also, I've seen many sets from the factory that have some screen retention from the factory testing and some without. I believe in this case above, there is some screen retention that needs to be worked out by using the set and or running a clear panel. Normal users who purchase this set aren't looking for this and will never see it so Sony will probably be pretty successful if they accomplish their goals with this new process.
We really need to wait until some of the more experienced people get the set and are able to give better feedback either pro or con.
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